Here is a routine I have been doing as of late...and I feel like its putting some good size on my triceps and biceps...
start with triceps (this is my weak point)
rope pushdowns - 4 sets, all in the 15-20 rep range...going heavier each set
Paramount overhead tricep extension mach. (this is a very old machine) (think db overhead extensions, simular movements) 4 sets, all in the 15-20 rep range, with some dropsets on my last set
Cable rope overhead extensions (leaning over at 90 degree) - 4 sets, all in the 15-25 rep range...again working on the longer head of the tricep, also doing some drops at the very end
paramount preacher bicep machine curls - 4 sets, 15 rep range...(forcing tons of blood in the bicep, and going full range of movement)
Standing cable curls - 4 sets, 15 rep range (last couple sets doing dropsets ) Again full range of movement
D.B. hammer curls (or pin wheel curls) - 2-3 sets, going up to 15-20 reps...done either one arm at a time, or short on time, doing two arm version...at this point my bis and tris are so full of blood its hard to go heavy...but just going that one final pump...