WAX BALL SPRUE 4MM / 250

Stock Code:
YE7540250
INDENT

Description

Fluid metal experiences a contraction upon solidification. The resulting partial vacuum can be compensated by drawing molten metal from the “reservoir”. This was the idea when the sprues were created.

Ball Diameter = 4mm

Supplied as a packet of 250

Also available:
Sprues Blue, Ball-Diameter 5mm, Pkt 250 (YE7550250)
Sprues Blue, Ball-Diameter 6mm, Pkt 250 (YE7560250)
Sprues Blue, Ball-Diameter 7mm, Pkt 250 (YE7570250)