The Grey Boy buzzers are absolutely deadly for rainbow and brown trout all year round and the two tone combination on the wing buds offers great contrast in gin clear water. Buzzers are most effective during the months of April, May and June where hatching buzzer on reservoirs and smallwaters. Fish this fly static on a floating line, washing line or under the bung. The Jenkins’ Grey Boy Two Tone Buzzer is available in both size 10 and size 12 to help you best match the hatch during buzzer time. Tied on Fulling Mill Barbless Hooks.