Introducing the Miter T Locking Bolts by POWERTEC. This t slot hardware is designed with a larger head that fits t-slotted miter slots - intended to help with a variety of woodworking and metalworking applications for fixturing, holding and positioning work material. The threaded portion is 5/16 in. 8 and 3 in. long. These miter T locking bolts are also extremely useful and offer versatility for a wide an assortment of clamping jigs and fixtures. The 32 in. Aluminum T-Track with Miter Bar Combo A cost effective woodworking duo that works with most standard 3/4 in. x 3/8 in. miter gauges (with or without a t-slot plate). It can work with an assortment of router table, drill press tables, table saw extensions and custom bad saw tables. Using a carbide tipped blade, the miter t-track can be cut for customized functionality. Unlike other more expensive versions, POWERTEC track, and bar set features a center (middle) line guide track - perfect for drilling, project versatility and alignment. The 4-Point Thru Knobs These multi-functional 4-arm knobs provide you with friendly build allows you to utilize a secure handgrip while maximizing your adjustment and tightening control. The black knob is made with high quality, durable polymer plastic and flaunts an easy to grip design. The knob is 1.5 in. diameters and 1 in. in length. It has a 5/16-18 hole thru threaded insert and features a high precision metal construction to stand up to high volume usage, along with wear and tear. Material: Multi Pack.