'gig' Piccolo and Interval harpcello stool
heights with different size leg extensions.

The 12" leg extensions are solid aluminum with threaded holes at 1" increments.

12" leg extensions will not fit completely into piccolo harpcello stool leg.

Piccolo Harpcello 10.5" aluminum frame stool height ranges with seat:

without leg extensions and 1" rubber tips 13" (33 cm)
8" aluminum leg extensions 14"- 17" (35.6 to 43.2 cm)
9" aluminum leg extensions 15"- 18" (38.2 to 45.7cm)
10" aluminum leg extensions 16"- 19" (40.7 to 48.2 cm)
11" aluminum leg extensions 17"- 20" (43.2 to 50.9 cm)
12" aluminum leg extensions 18"- 21" (45.7 to 53.3 cm)

Interval Harpcello 16" aluminum frame stool height ranges with seat:

without leg extensions and 1" rubber tips 17.5" (44.5 cm)
12" aluminum leg extensions 19"- 26" (48.2 to 66.1 cm)

To create forward seat angle, we install spacers on rear seat mounting holes.
This lowers the height ranges above by 1" or more. Please discuss with us.