100mm A=40 B=60 Chubb Locks M3 Medeco Biaxial euro cylinders have been tested for conformity to the highest BS EN1303 standards. Can be masterkeyed to suit all types of locks and padlocks without reducing the security. Available in all sizes keyed both ends in Satin Nickel or Polished Brass finishes. Supplied with 2 keys extra keys cost á7.50(excluding vat @ 17.5%)