2-piece tyre jack set for the mobile and stationary use. Both tyre jacks are made of glass fibre reinforced plastic: 9502 tyre jack with 1/4" bit mounting. 9503 tyre jack with valve ejector for Sclaverand (French) valves and bleeder valve for car valves. With the glass fibre reinforced plastic tyre jacks, the tyres can be safely levered off the rim without damaging the rim.