Kulondola kalasi ya GLR mndandanda wa Scries (Standanity Stone Screw Screw ndi ulusi) wokhazikitsidwa pa C5, CT7 ndi CT10 (Jis B 1192-3). Malinga ndi kulondola kwa kalasi, kusewera 0,005 (Kutsitsa: C5), 0.02 (CT7) ndi 0,05mm kapena ochepera (CT10) ali ndi katundu. GLR series (Standard stock of Single nut ball screw with metric thread) of screw shaft screw material S55C (induction hardening), nut material SCM415H (carburizing and hardening), the surface hardness of the ball screw part is HRC58 or higher.