Premier Sprung Memory Lock – 6016/21 – 18–21 mm Tube – Very Good
£10
Comparable sizes on the market: 19.1 mm (¾") and 5/8" locks, confirming the “small-tube” category. Comparable sizes on the market:19.1 mm (¾") and5/8" locks, confirming the “small-tube” category. Internal fit: ≈18–21 mm round tube (with sleeve).
