XM1 / XM1r Mouse Skates, 99,5% PTFE, white - single set The big skates on the XM1 / XM1r gaming mice by Endgame Gear ensure undisturbed gliding, reduce the tiring effect of repeated fast movements and thus help to maintain a high pointer accuracy permanently. Although they may be made of durable PTFE, over time, even the toughest skates wear off. The big skates on the XM1 gaming mice by Endgame Gear ensure undisturbed gliding, reduce the tiring effect of repeated fast movements and thus help to maintain a high pointer accuracy permanently. Although they may be made of durable PTFE, over time, even the toughest skates wear off. That's why Endgame Gear has provided a replacement. The set includes a set of replacement feet in white.