Custom Extension Screw Collar aff jack We recommend these chocks for

We recommend these chocks for tires up to 42 inches in diameter

or shop use

Lift from the safest jacking point designated by your vehicle's manufacturer with the 20-ton Pinch Weld Pad Frame Pad from Safe Jack

but rather from stability

Custom Extension Screw Collar aff jack We recommend these chocks forThe Safe Jack Extension Screw Collar (ESC) is a device made from highly durable PLA carbon fiber that wraps around your bottle jacks extension screw, acting as the universal, secure engagement for our Extensions and Lift Pads. The ESC also provides the operator with 100% available stroke of the jack and maximizes the height to an additional 1. 5 inches. Our premade Extension Screw Collars are measured specifically for the bottle jack brands we carry.