Adapt to different conditions with the Canterbury Performance Studs Short in Training Silver, replacement studs that work with all adult Phoenix Genesis and Speed Infinite soft ground boots. With four 13mm and eight 11mm aluminium soft ground studs included, the Canterbury Performance stud pack has everything you need to replace lost or damaged studs or adjust your boots to better fit the onpitch conditions. The shorter length perfectly bites into the turf when the ground is drier and firmer, and the sturdy aluminium construction offers superb durability. Canterbury Performance short stud pack Four 13mm and eight 11mm aluminium soft ground studs included Works with all adult Phoenix Genesis and Speed Infinite soft ground boots Screwin Durable aluminium build.