The Saeshin H400 40K Handpiece is a professional replacement handpiece designed for technicians who need higher torque, stable high-speed performance, and compatibility with standard nail drill bits. Saeshin’s official US product page lists it as H400 40,000 RPM Handpiece (3/32"), while distributor and retailer pages consistently describe it as a high-torque carbon-brush model for professional use.

Key Features

• Up to 40,000 RPM
• 4.0 Ncm torque
• 3/32" / 2.35 mm bit compatibility
• Carbon brush handpiece design
• Strong focus on durability and low vibration
• Made in South Korea on current seller pages.

Why It Works Well for Professional Use

The H400 is best positioned for nail techs who want more power than standard mid-range handpieces. Multiple product pages describe it as a stronger option suitable for both manicure and pedicure, and Ukrainian dealer pages specifically note that the 4.0 Ncm torque makes it practical for using larger pedicure attachments and discs.

Technical Specifications

• Model: H400
• Speed: 40,000 RPM
• Torque: 4.0 Ncm
• Dimensions: about 159.5 × 29.4 mm
• Weight: about 233 g
• Bit size compatibility: 2.35 mm / 3/32"
• Product code on one seller page: MSHP-H400.

Compatibility

Current seller pages show the H400 as compatible with Strong control units, and one specialty retailer explicitly says it suits the Strong 207A control unit. Set pages also show it being sold in the Strong 210 / H400 configuration, which supports Strong-series compatibility.

What’s Included

Retailer listings commonly mention the handpiece with a maintenance wrench and spare carbon brushes.

Important Note

When switching between Forward and Reverse, the motor should come to a complete stop first. That warning is also included in your source text and matches standard usage guidance for this handpiece category.