BRASS MANDREL SPRUE FORMER SET OF 3 - JEWELRY RUBBER MOLD MAKING - Brass Sprue former is designed to be used when making rubber molds. The brass sprue former has a tapered cone with a center hole for the 1/8" rod. The rod may be cut as needed.The cone shape formed in the mold provides the cavity for contact between the mold and wax injector nozzle. 🔻 SPECIFICS: JETS Product # 1310-122 X3 🔻 🔸 Material: Brass 🔸 Parts: Cone with 1/8" Hole and Rod 1/8" Diameter 🔸 Cone Tapered Measurements: 7/32" Tip to 9/16" at Base 🔸 Rod Measures: 1/8" x 2" Long Sale is for 3 Pcs Shipping: Via USPS First Class Mail NOTE: Visit JETSINC our ebay Store Listings for a wide variety Casting and Wax working supplies along with a range of Hand Tools for Jewelry Making and many more Jewelers Equipment Tools and Supplies. JETS Inc. 1E 920 CKSP M