1/2.13 UNC LEFT HAND Coventry Die Head Chaser set 1/2x12 (3/4 Diehea S20 grade for free cutting steels
Specification LEFTHAND Chasers die set for 3/4" (20mm) Coventry Die Head Chaser sets HSS set 1/2X13 UNC Note: These thread chasers also fit Herbert diehead copies such as Rubometric & OSG Part Number ES-7974Visit the JLS Supplies Ltd website for more information on 1/2.13 UNC LEFT HAND Coventry Die Head Chaser set 1/2x12 (3/4 Diehea S20 grade for free cutting steels