Shimpo FG-M4FPG3 Grip Attachment (3mm wide fine point grip). Metric 4 Thread - FG-M4FPG3 (3mm wide fine point grip).
Proposition 65 Warning for California Residents: This product can expose you to chemicals including Benzene, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.