Manufacturers Of All-Steel Quik-Loc Shaft Collars. Allows A Change Of Spools Without Tools. Eliminates Use Of Wrenches For Set Screws. One Hand Operation Allows Quik-Loc To Slip On/Off Shaft Without Tools. Designed To Upgrade Winding, Payoff, Spooling & Other Types Of Machines That Need To Position/Retain Spools, Reels, Bobbins. Standard, Metric, & Special Sizes Available To Fit Any Shaft. Modifications Available To Accommodate Special Requirements