An tsara wannan injin don yin kwalliya akan ƙaramin gilashi da babban gilashi. Za'a iya motsa waƙar mai ɗaukar baya da ƙasa bisa girman girman gilashi. Don ƙaramin gilashi, ana iya matsar da waƙar mai ɗaukar baya zuwa sama. Don girman girman gilashi, ana iya jujjuya waƙar mai ɗaukar baya zuwa ƙasa, yana ɗaukar ikon PLC da keɓaɓɓen aiki. Allon na iya nuna kaurin gilashi, kusurwar bevel, faɗin bevel da tsayin baya na baya.
Masu canzawa suna amfani da babban tsarin watsa sarkar abin nadi, gilashin gilashin gilashi yana da zane don aiki karamin gilashi, mai sauyawa ne bayan lalacewa. Wannan gilashin garanti na tsari yana da ƙarfi. Daidaitaccen aiki yana da girma.