The perfect accessory for tightening and loosening blueprint hanging clamp knobs. Works with all sizes hanging clamps. Crafted in brushed stainless steel and laser-cut to ensure precision fit over wing knobs of all vertical plan file clamps. Hardware is fully compatible with all  manufactures such as PlanHold, Safco, Mayline and Adir.

This tool is a necessary accessory for any document storage system. Located beneath the removable thermal-set plastic handle is a hexagon hole for removal of broken wing knobs.

A maximum of 1 to 1-1/2 turns is all that is required to securely clamp up to 100 sheets of full-size drawing paper.

·         Strong, sturdy stainless steel wrench

·         Perfect grip easy to use

·         No more broken fingertips

·         Easy to tighten or loosen wing knobs

·         Limited Lifetime Warranty

·