1) Material: zinc alloy or plastic

2) Finish: chrome plated other finish upon requests

3) Key:
a) 5 disc tumble mechanism, both double and single key bit, 120 key changes
b) 6 disc tumble mechanism, 120 key changes

4) Cylinder size:
a) 202-D19mm*L22mm
b) 338-22/26/32/38: D19 L22/26/32mm
c) 138-22/26/32/38: D19 L22/26/32mm
b) 139-22/26/32/38: D19 L22/26/32mm