Team Z Motorsports Weld-In Inner Diameter Tube Coupler’s in three sizes. Constructed out of billet steel, and CNC machined in house for a precise fit. These couplers are ideal for roll cages, engine bridges, and other tube sections that need removal. Coupler’s are available for 1-5/8â€³ x .083; 1-1/2 x .065; 1-1/4 x .065 tube sizes. Please use drop down menu to order. Stainless Steel bolts are include, Price is for One Assembly. Proudly made in Detroit, Michigan.