Bit holder cap with spring clip 1/4" - 6.35 mm type no. R.245
-STANDARDS: NF ISO 2725-1, NF ISO 1173, ISO 2725-1, ISO 1173, DIN 3124 -Stiffer, more secure, spring clip for infrequent bit changes. -Square drive has side-hole for ball or plunger lock. -Finish: bright chrome.