Simpson 175-EB TT 316-TT Hidden Deck Fastener for Timber Tech deckingModel No. 175 EB TT Biscuit Model No. 316 TT Applications Timber Tech decking Material Polypropylene Decking Thickness (in.) 3 4" to 1 1 2" Board Spacing (in.) 3 16 Product Includes EB TY fasteners, 316SS #7 trim head screws, (1) T15 Driver Bit , (10) #10 x 2 3 4" DCU 305SS fasteners for securing starter board and (1) T20 Driver Bit Color Black Packaging Type Bucket Packaging Qty. 175 The EB TY is a polypropylene biscuit fastener that fits into a pre