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Pulley - Triple-Sheave
Pulley - Triple-Sheave
Price: $2.65
Excellent quality, free-running pulleys. The sheaves are 50 mm in diameter and are made of rigid plastic. The block is constructed of metal with swivel hooks at the top and bottom. Color may vary.
Product Number: SB10810M
 
Pulley - Quadruple-Sheave
Pulley - Quadruple-Sheave
Price: $3.40
Excellent quality, free-running pulleys. The sheaves are 50 mm in diameter and are made of rigid plastic. The block is constructed of metal with swivel hooks at the top and bottom. Color may vary.
Product Number: SB10811M
 
Double-Tandem Pulley
Double-Tandem Pulley
Price: $1.85
Excellent quality, free-running pulleys. The sheaves are 30/40 mm in diameter and are made of rigid plastic. The block is constructed of metal with swivel hooks at the top and bottom. Color may vary.
Product Number: SB10812M
 
Triple-Tandem Pulley
Triple-Tandem Pulley
Price: $2.55
Excellent quality, free-running pulleys. The sheaves are 30/40/50 mm in diameter and are made of rigid plastic. The block is constructed of metal with swivel hooks at the top and bottom. Color may vary.
Product Number: SB10813M
 
Pulley - Single-Sheave
Pulley - Single-Sheave
Price: $2.95
Excellent quality, free-running pulleys. The sheaves are 50 mm in diameter and are made of rigid plastic. The block is constructed of metal with swivel hooks at the top and bottom. Color may vary.
Product Number: SB12099M
 
Pulleys - Double-Sheave
Pulleys - Double-Sheave
Price: $3.20
Excellent quality, free-running pulleys. The sheaves are 50 mm in diameter and are made of rigid plastic. The block is constructed of metal with swivel hooks at the top and bottom. Color may vary.
Product Number: SB12100M
 
Pulley Cord - 30-ft. Roll
Pulley Cord - 30-ft. Roll
Popular Choice
Price: $5.20
Tightly braided nylon cord especially designed for pulley and pendulum systems.

*NOTE: This is a commonly used component for publishers’ hands-on science kits.
Product Number: SB15378M
 
Pulley Set
Pulley Set
Price: $7.45
Set of two. Double and single, 2" diameter. Excellent quality, free running. Made of rigid plastic with metal block and swivel hook top and bottom. Includes 30 ft. roll of nylon pulley cord.
Product Number: SB16150M
 
Assorted Pulleys
Assorted Pulleys
Popular Choice
Price: $23.65
Set of 100 pulleys consists of 25 each of: 40 mm, 30 mm, and 20 mm diameter pulleys (with 3.2 mm bores); and 10 mm pulleys (with a push fit to 2 mm motor shaft).
Product Number: SB28836M
 
Pulleys Discovery Kit®
Pulleys Discovery Kit®
Price: $17.80
Contains four pulleys and an instructional guide with suggestions for classroom activities.
Product Number: SB26468M