This kit is great for property managers and locksmiths who rekey Sargent Locks occasionally. Contains about 30 pins of each size all set to OEM standards. Contains bottom pins, top pins, master pins, and springs. LAB produces pins for many lock manufacturers around the world, so rest assured that these pins are of the BEST quality. Case is made of plastic. The plastic used is ultra durable and uses a well constructed plastic hinge not a flap of thin plastic like some plastic cases out there.FOLLOWER and TWEEZERS are not included. Please see below...