Proskit SD-9857M 57-Piece CR-V Screwdriver Bit Set – Ø6.35 & Ø4 mm, Ratchet Handle
Proskit SD-9857M 57-Piece CR-V Screwdriver Bit Set – Ø6.35 & Ø4 mm, Ratchet Handle
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Description
Description
The Proskit SD-9857M provides two separate bit sets — 24 pieces of Ø6.35 mm CR-V bits for general electronics and electrical work, and 30 pieces of Ø4 mm CR-V bits for precision work on phones, game consoles, wearables, laptops and small appliances. The swivel cap allows single-finger rotation for fast, controlled driving.
A 1/4" to 4.0 mm adaptor bridges both bit sizes using the same handle, and the adjustable 3-length extension bar reaches fasteners in deep or awkward locations. A durable storage box keeps all 57 pieces organised.
Key Features
- 57 pieces total: 24 × Ø6.35 mm CR-V bits and 30 × Ø4 mm CR-V bits, plus extension bar and adaptor
- Swivel cap for smooth single-finger rotation during fast driving
- Non-slip TPR handle for secure grip
- Adjustable 3-length extension bar for deep or restricted access
- 1/4" to 4.0 mm adaptor for compatibility with both bit groups
- Durable storage box for all pieces
Product Benefits
- Two bit diameter groups in one set cover both standard electronics (Ø6.35 mm) and precision phone/tablet work (Ø4 mm) without needing a second kit
- The swivel cap reduces hand fatigue when driving multiple fasteners quickly
- Non-slip TPR handle maintains grip even when hands are greasy or the work area is tight
- The adjustable extension bar adds reach without requiring a separate extension accessory
- CR-V (Chrome Vanadium) steel bits resist wear and deformation under torque
Technical Specifications
- Model: Proskit SD-9857M
- Total pieces: 57
- Handle: Non-slip TPR with swivel cap
- Adaptor: 1/4" to 4.0 mm
- Extension bar: Adjustable, 3 lengths
- 24 pcs Ø6.35 mm CR-V bits:
- Slotted: 4.0, 5.0, 6.0, 7.0 mm
- Phillips: PH0, PH1, PH2×2, PH3
- Hex: 3.0, 4.0, 5.0, 6.0 mm
- Square: S1, S2
- Pozidriv: PZ0, PZ1, PZ2, PZ3
- Spanner: 2.6 mm
- Torx: T25, T27, T30, T40
- 30 pcs Ø4 mm CR-V bits:
- Slotted: 1.5, 2.0, 2.5, 3.0, 3.5, 4.0 mm
- Phillips: PH00, PH0, PH1, PH2
- Hex: 0.9, 1.3, 1.5, 2.0, 2.5, 3.0 mm
- Torx: T4, T5, T6, T7, T8, T10, T15, T20
- Needle type: 1.0 mm / Triangle: 3.0 mm / Tri-wing: 3.0 mm
- Spanner: 2.6 mm
- Pentalobe: P2, P5
- In the box: 1 × Proskit SD-9857M set in storage box
Why You'll Love It
- Pentalobe P2 and P5 bits handle Apple device screws that standard sets omit
- The storage box keeps all 57 pieces in fixed positions, so nothing gets lost between jobs
- A single handle fits both bit groups — no need to manage multiple drivers
- From home DIY to professional bench repair, the two CR-V bit groups cover virtually every fastener type encountered
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