DeSantis Gunhide 137, Slim-Tuk, Inside Waistband Holster, Ambidextrous, Black, Fits Glock 43/43x MOS With or Without Red Dot, Kydex 137KJ3TZ0 The Slim-Tuk is a minimal ambidextrous IWB holster fashioned from Kydex sheet. One of the most unique features of this IWB holster is that it uses DeSantis's tuck-able 360 C-Clip" which affords the wearer unlimited mounting options. The hardware can easily be reversed to change from right to left hand. The Slim-Tuk is precision molded and has adjustable tension and a rugged 1.75" nylon clip.