Products Products Categories Mechanical Products Cylinder Half cylinders with Thumbturn Half cylinders with Thumbturn Features Size available from 40mm – 80mm. Suitable for wooden and steel door Technical Features Conforms to EN1303:2005 Material Specifications Body : Brass Knob: Brass SKU Code Finish (YY) 40 MM TT HALF - S SN 45 MM TT HALF - S SN 50 MM TT HALF - S SN Find a Yale Partner Similar products Bathroom CylindersDimple Key / Regular Key Double CylindersDimple Key / Regular Key Thumbturn with keyDimple Key / Regular Key