USD 6.99 (Sportaid)
Front Caster Tube 8 x 1-1/4 Straight Valve (2546)
Inner tubes - caster and power chair. An inner tube for 8 x 1 1/4 in pneumatic wheelchair casters, with a straight valve stem.
Schwalbe
Photo could not be loaded
Schwalbe · Inner tubes - caster and power chair · AC-159
Schwalbe Tube No. 1 for 12 in Wheels (47 to 62-203)
Small 12 in wheels on a 203 mm rim are used on attendant-propelled chairs, buggies and a number of power chairs. Schwalbe's No. 1 butyl tube covers tire widths from 47 to 62 mm on that rim and weighs 80 g. Valve choices include a Schrader-type AV in 32 or 40 mm, an AV angled at 45 degrees for tight hubs, a Presta-type SV and a 32 mm Dunlop DV.
- Type
- Standard butyl inner tube
- Wheel size
- 12 in
- ETRTO
- 47 to 62-203
- Weight
- 80 g
Schwalbe Tube No. 1 (12 in) key features
- Covers 47 to 62 mm tires on 203 rims
- Butyl tube with a stated weight of 80 g
- AV valve offered straight in 32 or 40 mm
- AV 45 degree version for wheels with little pump clearance
- SV and 32 mm DV versions also listed
Who the Schwalbe Tube No. 1 (12 in) suits
Suits transit and attendant chairs, children's buggies and power chairs whose tires carry a 203 rim marking. On small wheels with large hubs the 45 degree valve is usually the easier one to inflate, so say which stem you need.
Figures for comparing
- Weight
- 0.08 kg (0.2 lb)
- Wheel size
- 12 in, 12.5 in (ETRTO 47/62-203)
The same units on every product, converted from the specifications below. Where a source gives two limits, the lower one is shown.
Schwalbe Tube No. 1 (12 in) specifications
| Type | Standard butyl inner tube |
|---|---|
| Wheel size | 12 in |
| ETRTO | 47 to 62-203 |
| Valve options | AV 32 mm, AV 40 mm, AV 45 degree, SV, DV 32 mm |
| Weight | 80 g |
| Material | Butyl |
| Article no. | 10462041 |
| EAN | 4026495960489 |
| Maker country | Germany |
| Brand | Schwalbe |
| Category | Wheels, handrims and tires, Inner tubes - caster and power chair |
| Catalog ID | AC-159 |
Compared with the source page on 5 October 2026. Details can change, so we confirm them in your quote. Open the source page.
Schwalbe Tube No. 1 (12 in): common questions
Does it fit a 12 1/2 x 2 1/4 in tire?
That tire is normally marked 57-203 or 62-203, which lies inside the maker's stated range. Check your sidewall to be sure.
When should I choose the 45 degree valve?
When the hub or motor housing sits close to the rim and a straight stem cannot be reached with a pump.
Is the price per tube?
Yes, the recommended retail price is for one tube.
How to get a quote for the Schwalbe Tube No. 1 (12 in)
Add it to your enquiry list
Press Add to enquiry. You can add other products and parts to the same list.
Tell us your country and needs
Send the list with your country, sizes and any options you want. No payment details are asked.
Get a personal reply
You receive availability, a price and delivery options by email, and decide after that.
Similar to the Schwalbe Tube No. 1 (12 in)
All Wheels, handrims and tiresUSD 10.50 (Sportaid)
Front Caster Tube 8 x 2 with 45 Degree Valve (2545-45)
Inner tubes - caster and power chair. An inner tube for 8 x 2 in wheelchair casters with a valve stem angled at 45 degrees for easier pump access.
USD 9.50 (Sportaid)
Wheelchair Tube 10 x 3 Straight Valve (2564)
Inner tubes - caster and power chair. A 10 x 3 in inner tube with a straight valve stem for wide small-diameter wheelchair wheels.
GBP 6.50 ex tax (EPC Wheelchairs)
Tube 4 Mobility Pneumatic Inner Tube
Inner tubes - caster and power chair. An inner tube for 4 in rim mobility tires such as 2.80/2.50-4 and 3.00-4, with a 90 degree bent Schrader valve.
GBP 8.22 ex tax (EPC Wheelchairs)
12 1/2 x 2 1/4 Mobility Inner Tube Offset
Inner tubes - caster and power chair. An inner tube for 12 1/2 x 2 1/4 in mobility wheels with an offset Schrader valve angled at 45 degrees.
Chairs and other parts
Guides for this kind of product
How-to & Maintenance · 8 min read
Tire and caster care in 15 minutes
Soft tires and hair-wrapped casters make every push harder. This short routine keeps both in order and tells you when parts need replacing.