ConesCones are designed so they will easily separate from parts.  Their unique shape enables them to reach into remote areas without lodging.

Standard in these sizes:

No. A  B
FB3-8CN 3/8˝ 1/2˝
FB9-16CN 9/16˝ 5/8˝
FB11-16CN 11/16˝ 3/4˝
C3-4CN 3/4˝ 7/8˝
XC3-4CN 3/4˝ 7/8˝