- The TV8 Extensions (8mm Diameter) lengths from 20mm/.787" up to 1000mm/39.4"
- Extensions are temperature stabilized.
- Multiple extensions can be used in combination.
- A SPRING is usually used with Extensions 64mm and larger


Diatest - Depth Extensions (4mm & 8mm Ø)
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Extension Dia. / Thread:
Extensions Length :
Spring :
Item No. | Extension Dia. / Thread | Extensions Length | Spring | Our Price | QTY |
---|---|---|---|---|---|
TV-8-20 | 8mm - Standard (M6 x 0.75 to M6 x 0.75) | .787" / 20mm | No | $94.00 | |
TV-8-20-F | 8mm - Standard (M6 x 0.75 to M6 x 0.75) | .787" / 20mm | w/ Spring | $94.00 | |
TV-4-25 | 4mm - Slimline (M3.5 x 0.35 to M6 x 0.75) | .787" / 20mm | No | $144.00 | |
TV-4-25-F | 4mm - Slimline (M3.5 x 0.35 to M6 x 0.75) | .787" / 20mm | w/ Spring | $144.00 | |
TV-8-30-F | 8mm - Standard (M6 x 0.75 to M6 x 0.75) | 1.18" / 30mm | w/ Spring | $94.00 | |
TV-8-30 | 8mm - Standard (M6 x 0.75 to M6 x 0.75) | 1.18" / 30mm | No | $94.00 | |
TV-4-35 | 4mm - Slimline (M3.5 x 0.35 to M6 x 0.75) | 1.18" / 30mm | No | $144.00 | |
TV-4-35-F | 4mm - Slimline (M3.5 x 0.35 to M6 x 0.75) | 1.18" / 30mm | w/ Spring | $144.00 | |
TV-8-40-F | 8mm - Standard (M6 x 0.75 to M6 x 0.75) | 1.57" / 40mm | w/ Spring | $94.00 | |
TV-8-40 | 8mm - Standard (M6 x 0.75 to M6 x 0.75) | 1.57" / 40mm | No | $94.00 | |
TV-8-50-F | 8mm - Standard (M6 x 0.75 to M6 x 0.75) | 1.97" / 50mm | w/ Spring | $94.00 | |
TV-8-50 | 8mm - Standard (M6 x 0.75 to M6 x 0.75) | 1.97" / 50mm | No | $94.00 | |
TV-4-50 | 4mm - Slimline (M3.5 x 0.35 to M6 x 0.75) | 1.97" / 50mm | No | $144.00 | |
TV-4-50-F | 4mm - Slimline (M3.5 x 0.35 to M6 x 0.75) | 1.97" / 50mm | w/ Spring | $144.00 | |
TV-8-64-F | 8mm - Standard (M6 x 0.75 to M6 x 0.75) | 2.5" / 64mm | w/ Spring | $94.00 | |
TV-8-64 | 8mm - Standard (M6 x 0.75 to M6 x 0.75) | 2.5" / 64mm | No | $94.00 | |
TV-4-64 | 4mm - Slimline (M3.5 x 0.35 to M6 x 0.75) | 2.5" / 64mm | No | $144.00 | |
TV-4-64-F | 4mm - Slimline (M3.5 x 0.35 to M6 x 0.75) | 2.5" / 64mm | w/ Spring | $144.00 | |
TV-8-80-F | 8mm - Standard (M6 x 0.75 to M6 x 0.75) | 3.15" / 80mm | w/ Spring | $155.00 | |
TV-8-80 | 8mm - Standard (M6 x 0.75 to M6 x 0.75) | 3.15" / 80mm | No | $155.00 | |
TV-4-80 | 4mm - Slimline (M3.5 x 0.35 to M6 x 0.75) | 3.15" / 80mm | No | $208.00 | |
TV-4-80-F | 4mm - Slimline (M3.5 x 0.35 to M6 x 0.75) | 3.15" / 80mm | w/ Spring | $208.00 | |
TV-8-100 | 8mm - Standard (M6 x 0.75 to M6 x 0.75) | 3.94" / 100mm | No | $161.00 | |
TV-8-100-F | 8mm - Standard (M6 x 0.75 to M6 x 0.75) | 3.94" / 100mm | w/ Spring | $161.00 | |
TV-4-100 | 4mm - Slimline (M3.5 x 0.35 to M6 x 0.75) | 3.94" / 100mm | No | $229.00 | |
TV-4-100-F | 4mm - Slimline (M3.5 x 0.35 to M6 x 0.75) | 3.94" / 100mm | w/ Spring | $229.00 | |
TV-8-125 | 8mm - Standard (M6 x 0.75 to M6 x 0.75) | 4.92" / 125mm | No | $176.00 | |
TV-8-125-F | 8mm - Standard (M6 x 0.75 to M6 x 0.75) | 4.92" / 125mm | w/ Spring | $176.00 | |
TV-4-125-F | 4mm - Slimline (M3.5 x 0.35 to M6 x 0.75) | 4.92" / 125mm | w/ Spring | $250.00 | |
TV-4-125 | 4mm - Slimline (M3.5 x 0.35 to M6 x 0.75) | 4.92" / 125mm | No | $250.00 | |
TV-8-250 | 8mm - Standard (M6 x 0.75 to M6 x 0.75) | 9.84" / 250mm | No | $285.00 | |
TV-8-250-F | 8mm - Standard (M6 x 0.75 to M6 x 0.75) | 9.84" / 250mm | w/ Spring | $285.00 | |
TV-4-250-F | 4mm - Slimline (M3.5 x 0.35 to M6 x 0.75) | 9.84" / 250mm | w/ Spring | $333.00 | |
TV-4-250 | 4mm - Slimline (M3.5 x 0.35 to M6 x 0.75) | 9.84" / 250mm | No | $333.00 | |
TV-8-500 | 8mm - Standard (M6 x 0.75 to M6 x 0.75) | 19.68" / 500mm | No | $587.00 | |
TV-8-500-F | 8mm - Standard (M6 x 0.75 to M6 x 0.75) | 19.68" / 500mm | w/ Spring | $587.00 | |
TV-4-500-F | 4mm - Slimline (M3.5 x 0.35 to M6 x 0.75) | 19.68" / 500mm | w/ Spring | $596.00 | |
TV-4-500 | 4mm - Slimline (M3.5 x 0.35 to M6 x 0.75) | 19.68" / 500mm | No | $596.00 |