Custom Extension Screw Collar chain Recommended for motors less than

Recommended for motors less than 79 Horsepower with up to a 12" Diameter Prop

Stable while under load

37M-SJR612  6-inch Universal Bottle Jack Lift Pad (Round cradle for axle

Compatible with autopilot systems

Compatible with all U

Custom Extension Screw Collar chain Recommended for motors less thanThe 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.