This swing seat is a new and safe design that includes a vandal proof insert and molded in stainless steel washers. Seats have a 1/2 inch hole that requires large end S-hooks or H-shackles to be used for connecting hardware. This seat is made of EPDM rubber. Available in black and yellow. The dimensions are as follows: 6" x 24" x 3/8" thick, 1/2" hole in each end.