DESANTIS SLIM-TUK KYDEX HOLSTER S&W M&P 9/40 IWB RH/LH BLACK The Slim-Tuk is a new ambidextrous IWB holster made out of Kydex sheet. This minimal, IWB holster uses a tuckable 360 C-Clip for unlimited mounting options. The hardware can easily be reversed to change from right to left-hand orientation. The precision-molded Slim-Tuk features adjustable tension and a rugged 1.75� nylon clip.