Ludwig classic curved heavy duty bass drum spurs with 1/2" spiked legs. Includes mounting brackets and rubber feet. Fits Ludwig kits from the late '70s forward (that are already drilled for the classic spur) but this set will also retrofit the smaller 3/8" original curved spurs used in the early '70s (you may need to slightly file out the large center hole for the bracket to accommodate the larger 1/2" leg.)