Fixings and innovative solutions for pros at CELO

Chipboard screw VELOX® SIT yellow zinc plated, full thread

High Performance from tip to head


The SIT recess guarantees a perfect power transfer and a long-lasting SIT bit. Due the conial recess the screw will be centerd (no tumbling) and sticks on the bit, so you get large improved working comfort. TX bits can also be used, but without the mentioned advantages. The patented tip thread area for no splitting and reducing installation torque. This is for a flushing screwing and a longer battery life. VELOX SIT is sliding coated for a additional torque reducing.
Product overview

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SIT® recess (=AW recess from Würth)

Long-lasting SIT® bit

Can also be used with TX-bits if no SIT®-bit is available

Perfect power transfer

Largely improved working comfort; the conical recess centers the screw (no tumbling) and sticks on the bit|Patented tip thread area

Underhead milling ribs and underhead milling pockets: perfect for wood and metal fittings because of flush fitting

Approved product for your safety

No damage to the screw head/zinc coating

Only one bit for four screw diameters- you save time and costs!

Available in yellow zinc plated

Especially well-suited for nylon plugs

Patented tthread reduces splitting as well as ­setting torque, which provides a perfect appearance and a longer battery life

Further specifications

  • Wood doors
  • Wood windows
  • Fittings
  • Chairs
  • Wood frames
  • Wood furniture

Area of application

  • Chipboard



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