Peruzzo Maxel Adpator The Maxle Adaptor from Peruzzo converts your Peruzzo roof and in-car carrier systems from a QR fixing so that they are compatible with 15mm and 20mm Maxle thru-axle systems.Features: Compatible with SRAM Maxle Thru-Axles Converts existing cycle carriers to be compatible with 15mm and 20mm thru-axle axle systems Converts existing cycle carriers to be compatible with 15mm and 20mm thru-axle axle systems Each adaptor includes both 15 & 20mm spacer that fits almost all QR designed carrier systems Genuine Peruzzo Spare PartsBuy Peruzzo Accessories from Chain Reaction Cycles, the World's Largest Online Bike Store.