Feature:1. The floor lock is made of iron galvanized of high hardness and can load 100kg bearing.2. Adopts TPU washer,wear resistant and skid resistance.3. The floor lock has 4 fixing hole,safe and stable to mount.4. The stable structure makes the floor lock very high durability and reliability in use.5. Use with casters to achieve full control of your trolley or cart.Specification:Item Type:Floor LockMaterial: Iron Galvanized+TPUFixing Hole: M8.5Fixing Hole Interval: 71x45mmFixing Plate Size: 90x100mm / 3.54 x 3.94in Loading Capability: 100kg/220.46lbModel(Optional)Retraction LengthExtension LengthStrokeApplicable Casters SizeX-75-32-391mm / 3.58in107mm / 4.21in21mm / 0.83in3inX-100-32-4114mm / 4.49in133mm / 5.24in18mm / 0.71in4in.Package List:1 x Floor Lock