Countersink & cage assortment by Zephyr Mfg.

Description

Countersink cage & bits-
Offered is a collection of countersink bits & cages.
1. 3 spring loaded cages with 1/4" shafts.  Body has spring loaded adjustment marks from 0-25 with 30 actual adjustments.  Have 1/4"female threads for accepting various tips.  Two are marked Zephyr Mfg. Co, Inglewood, Calif, ZT 330, 7 FP.  The 3rd is marked with a T in a triangle border.
2. 13 male 1/4" threaded bits that will fit the cages above.  Range in diam. from 3/8-5/8" in various lengths & taper degrees. Some are marked Schrillo, ZT & Craig. Most have illegible markings or name.  All have been used having good cutting edges.
3. Three pieces for twist drill bit, one marked 3/16 L-3 with a 3/16"twist drill bit, one marked 1/2 x 3/16 having no bit & one 3/8"
4. 5 one piece bits with 1/4, 3/8 & 1/2" shanks.  Makers include LeeLand, Cogswell & Cleveland T. D. Co.  Sizes range from 19/32 - 3/4".  Have been used with scar marks on shafts.  One has a modified tip, the others have good tip edges.
Some investigation indicates these may be for rivet use?  A nice assortment of quality bits.
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