Binders
Binding Machine, Electric Comb Binding Machine EB-30 A4 Size Punching Machine 21holes Rubber Ring Clips Dual-use Binding Machine
Product number:DL0332 Punch capacity: 30 sheets 80g Punch size: 3*8mm pumping the knife number: 21 Pressure ring size range: rubber ring 6-51mm, clips 3-35mm
https://www.bizrate.co.uk/binders/binding-machine-electric-comb-binding-oid39970049357.html