5Pcs 

MB24 Contact Tip Holder

TA24/142.0003

Two contact tip holders 

Suit MB24 torch and uses M6 contact tips

Study the images provided for comparison ID
Binzel & Binzel style torches. 
CONTACT TIP HOLDER MB24

(M6 x 27mm Long x M6 thread) 

part no TA24/142.0003