SIP Jig Borer Boring Head Set of 3 for 2MT No Etchings Switzerland. All 3 have smooth adjustments. Sizes are 3/4 to 1", 15/16 to 1 1/4", and 1/8 to 13/16.The 2 smaller are L type boring tool holders. The inserts look to be in decent shape. There are no etchings on these but they do show signs of age and use. Please review all photos to determine condition and identification.