These concave, or T shaped, parallel watchmaker screwdrivers by Horotec are of the highest quality.

Set of 10 hollow ground watchmaker screwdrivers, Swiss-made, with knurled stainless steel handles and anodised aluminium ball-bearing swivel heads.

Delivered in a plastic case with a protective foam insert, 10 replacement hardened-blue steel concave T shaped blades and 2 fixing grub screws.

Screwdriver sizes included in this 10 piece set: 

0.60, 0.70, 0.80, 1.00, 1.20, 1.40, 1.50, 1.60, 1.80, and 2.00mm