BNR Tackle Slidelock - The SlideLock with Tip Saver is a key component to your trolling set up. Cone shaped entry to the locking grove for the swivel. This taper allows the swivel or bead chain to be pulled into the groove without hanging on the lip of the SlideLock. Thus preventing twist on the mainline. Built in soft "Tip Saver" that prevents the rod tip insert from being knocked out. Now there is no need to add a gum pucky or extra bead to your line. High end stainless steel Technical Snap. Less tangles in the net, no snapping open and easy to remove or put on weights. nternal and external radius designed into body of SlideLock to prevent chafing on the mainline.