RANISHAW -A-6560-2652-M4 Ø3 mm sfera di rubino confezione da 3
M4 Ø3 mm ruby ball, ceramic stem, L 100 mm, EWL 10 mm, for BLUM spindle probes. Straight styli for use on BLUM spindle probes. It is one of the hardest materials available and suitable for most applications.