Two Roller Low E Key
Rollers on each side of the low E key. This option should be used with adjacent rollers on the B(flat) and F(sharp) keys.
Catalog Number: 72
Available On: 601, 660, 201, II, III, & IV
Standard Included On: 101 & I
Conflicts With: Crown on Pancake Key (70); One Roller Low E Key (71)
Required Addition: Thumb B(flat) Roller (69); Thumb F(sharp) Roller (75)