/ Precision Measuring Tools / Precision Hand Tools / Micrometers / Micrometer Accessories / 247MB * Not actual product image 51180 247MB Micrometer Ball Attachment, 5mm Diameter Balls 51180 Other similar products For 436M Micrometers, 6.8mm diameter Anvil and Spindle 6.8mm Diameter Anvils. Features Specifications Contact Starrett Features Easily applied by snapping on to end of either anvil or spindle, thus permitting two attachments to be used together Balls are hardened, measure 5mm in diameter, and move freely in the retainer, insuring positive contact with anvil and spindle Specifications : Diameter: .200" (5mm) Fits Starrett Series: For 436M Micrometers, 6.8mm diameter Anvil and Spindle