This is a replacement Hudy 1/10 Off-Road "Air Vac" Vacuum Pump Post & Shock Holder, a shock holder for 1/10 off-road shock absorbers, included standard in #104004 HUDY Air Vac. This 1/10 Off-Road part is compatible with other HUDY Air Vacs. This product is made from premium Swiss 7075 T6 aluminum with a black anodized coating. Laser engraved shock symbols are featured for easy identification.