Drill Jig Bushing Co. [Madras] Pvt. Ltd manufactures High Precision Drill Collets. Drill Jig Bushing Co. [Madras] Pvt. Ltd is an ISO 9001:2000 certified company. Drill Jig Bushing Co. [Madras] Pvt. Ltd offers different types of bushing, chemical testing & and measuring equipments, cutting tools, drills, gauges and indicators etc. High Precision Drill Collets is available with 3mm size ranges. High Precision Drill Collets is available in fine finish. High Precision Drill Collets is hardened and bore honed.