This Thule Roof Bar Fitting Kit 753 is designed for T-track mounting and includes both mounting hardware and a T-Track Adapter. The kit is compatible with T-Tracks only in its current format. I have lost the key to the locks but these can be bought for £5 new so no worries. Kit comprises: 4 x lock plates (no key) 4 x feet including t-track mounting bolts 4 x bar attachments (all four are marked by side and position) Load capacity (depending on bars used) : 100kg
eBay