Model

Part Number	d - Bore	D - Outer Diameter	B - Width
D/W RW1-4	1.984 mm	6.35 mm	3.175 mm
D/W R1-4	1.984 mm	6.35 mm	2.38 mm
W 619/2-2Z	2 mm	6 mm	2.3 mm
W 619/2	2 mm	6 mm	2.3 mm
WBB1-8701 R	2 mm	7 mm	2.5 mm
W 618/2 X	2 mm	5 mm	2 mm
W 618/2 R	2 mm	5 mm	1.5 mm
W 630/2-2ZS	2 mm	7 mm	3.5 mm
W 639/2-2Z	2 mm	6 mm	3 mm
WBB1-8701	2 mm	7 mm	2.5 mm
W 618/2	2 mm	5 mm	1.5 mm
W 602 X-2ZS	2 mm	7 mm	3 mm
W 619/2 XR-2Z	2 mm	6 mm	2.5 mm
W 619/2 X	2 mm	6 mm	2.5 mm
W 619/2 R	2 mm	6 mm	2.3 mm
W 619/2 XR	2 mm	6 mm	2.5 mm
W 602	2 mm	7 mm	2.8 mm
W 617/2	2 mm	4 mm	1.2 mm
W 619/2 X-2Z	2 mm	6 mm	2.5 mm
W 637/2-2Z	2 mm	4 mm	2 mm

Part Number