Assortment contains 10 different sizes 3 that are 30 mm long and 7 which are 36 mm long. A complete set, includes Press in screw head, 1 thread in screw head, 1 stainless steel hollow bar with inner threads on one end, and 1 stainless steel pin that you insert into the hollow bar to supply extra strength and support. This style of T-bar allows you to cut the bar down to size needed, by cutting the non threaded end to size and inserting the steel ping for strength, then press in the press in screw head, which presses in and screw in the threaded screw head.
