This does not fit the old slotted bolts from vintage Premier drums, which is the reason I bought it. That aside, I'm sure it would be a handy accessory to have if you have drums with more modern (thicker) slotted bolts, as well as standard square headed bolts. In terms of the design, I think it would be more comfortable to use if there was more of a crucifix type overlap, rather than an L-shape. Not much leverage and not very comfortable in the hand.