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Park Tool · Piston or pad positioning tool

Park Tool PS-1 Disc Brake Pad Spreader

A 1.95 mm blade and temporary rotor-substitute function distinguish it from a thicker wedge press.

$16.74Nov 7, 26, 12:56 AM · New York
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  • Blade thickness 1.95 mm
  • Overall length 162 mm, per maker
  • Profile Tapered rotor-section-style contact

The job

A 1.95 mm blade and temporary rotor-substitute function distinguish it from a thicker wedge press.

Blade thickness

1.95 mm

Choose by the contact profile

Compare the rotor-like section with the thicker PP-1.2 wedge against the actual service requirement.

What this choice changes

A rotor-section profile for the stated service role

The PS-1 uses a tapered, rotor-like blade for the pad-spreading and temporary rotor-substitute operations described by Park Tool. Its 1.95 mm blade thickness is the key contact difference from the PP-1.2’s 3.2 mm wedge. Choose the profile required by the brake’s service instructions rather than treating the tools as two handle styles for the same opening.

The maker specifies a 162 mm overall length and a vinyl-dipped handle. Its temporary stand-in role can be relevant during the hydraulic checks described by Park Tool, but it does not make the tool a universal bleed block or establish compatibility with every caliper and piston material.

Compare the PP-1.2 when its specific wedge dimensions and permitted caliper scope match the job. Neither tool supplies a brake system, hose fittings or fluid. The PS-1 is a manual hand tool; its role comes from the blade contact, not a powered adjustment mechanism.

Specifications & supplied details

Specifications for the selected reference
DetailSpecification
Blade thickness1.95 mm
Overall length162 mm, per maker
ProfileTapered rotor-section-style contact
HandleVinyl dipped
Additional stated roleTemporary rotor substitute during specified service
SuppliedOne manual PS-1

Choose for your actual setup

Choose by the contact profile

Compare the rotor-like section with the thicker PP-1.2 wedge against the actual service requirement.

Keep substitute scope specific

Use the brake maker’s instructions to establish whether this temporary contact is suitable for that service.

Fit checks & limits

  • Maker describes stainless steel while the selected structured material field says aluminum; material remains unresolved.
  • Not a universal bleed block or ceramic-piston compatibility claim.

Questions before you choose

Is it the same contact as PP-1.2?

No. PS-1 has a 1.95 mm rotor-section-style blade; PP-1.2 has a 3.2 mm wedge and a different stated scope.

Does the temporary rotor role replace every bleed block?

No. Use the exact brake service instructions to select the required contact.

Do I need both PS-1 and PP-1.2?

They overlap in pad service but use different blade profiles. Choose the contact and temporary-substitute role required by the actual brake instructions; buying both is not automatically necessary.

Guides for this choice

Alternatives to compare

Selected listing details, manufacturer information and source images were compared. No hands-on trial or universal fit is claimed. Product identifier: B09WCCGLHP.