3/8x20 BSW LEFT HAND Coventry Die Head Chaser Set HSS (1/2 Diehead) S20 grade for free cutting steels
Specification LEFT HAND Chasers die set for 1/2" (12mm) coventry diehead 3/8x20 Note: These thread chasers also fit Herbert diehead copies such as Rubometric & OSG Part Number ES-7937Visit the JLS Supplies Ltd website for more information on 3/8x20 BSW LEFT HAND Coventry Die Head Chaser Set HSS (1/2 Diehead) S20 grade for free cutting steels