Pinion Return Spring for Delta Rockwell Drill Presses. 11-090 Type 1 14-040 Type 1 14-070 Type 1 17-900 Type 1 16-1/2 17-900 Type 2 16-1/2 17-950L Type 1 17-959L Type 1 16.5 LASER 17-965 Type 1 16-1/2 17-965 Type 2 16-1/2 DP250 Type 1 DP350 Type 1 DP400 Type 1