Nickel plated brass, line ⅜" cap per 4 piece set. Can be set with Osborne snap set No. 8068.

No. 14019 with ¼" Post - line 24
No. 14020 with ⅜" Post - line 24

Same as above but sold separately.

No. 14023 Socket only
No. 14024 Stud only
No. 14026 Cap ¼"  No. 14028 - Post ¼"
No. 14027 Cap ⅜"   No. 14029 - Post ⅜"